FeaturesDiameter: 110mmFive SpokePerformance UrethaneBuff Core TechnologyMaterial:Anodized 6061 T-6 aluminumThis wheel is the second style of PROTO wheels to come out. It shares the same spoked core but are different in the urethane. Sliders are harder than Grippers and also take a longer time to wear down, even when doing high-stress tricks such as sliders (hence the name) and powerslides.